1924. Delap. — Nnfrs nil tJic Planktmi of Valentin Hnrhonr. 3 



some in March, many in April and May. 1908. — A few taken in Ma}'. 

 1909.- — ^Several in September. 



Sarsia gemmifera : — 1906.— Two taken in August, and several in Septem- 

 ber. 1907. — One in June ; a few in August. 



Sarsia prolifera : — 1906. — One in August, some in September, and a good 

 many in October. 1907. — Tn May a good number were taken ; con- 

 tinued fairly numerous through June ; very plentiful in August. 

 1909. — A number seen in September. 



Sarsia tubulo^a : — 1906. — A good many seen in June. 1907. — Two in 

 April ; two in June. 1908. — One in May ; plentiful in June and 

 August. 1909. — Oii'^ in June. 



Tiara pileata : — 1908. — ^A f(nv in April ; more plentiful in June. 1907. — 

 One in January ; a few in April ; more pi Mitiful in May and June, 

 and one in August. 1908. — One in May ; plentiful in June and 

 Jul}^ 1909. — A few in June and September. 



LEPTOMEDUSAE. 



Agastra mira : — 1906. — One specimen taken in November. 



Dipleurosoma typicum: — 1906. — A few taken in October. 1907. — One in 

 April. 1909. — Plentiful in June and September. 



Euchilota pilosella : — 1906.^ — In June a good many were seen. 1907. — A 

 few in Ma}^ and June. 1908. — A good many in May and June. 

 1909. — A few in June ; man}- in September. 



Laodice calcarata: — 1906. — A good many in June. 1907. — A few m 

 August. 1908. — Some taken in June. 1909. — A good many in 

 September. 



Obelia nigra : — 1906. — Present in all tow-nettings from ?klarch to end of 

 November. 1907. — Plentiful in March and throughout the rest of 

 the year. 1908. — Taken in March, May and June. 1909. — Taken in 

 August and September. 



Phialidium cymbaloideum : — 1906. — Plentiful through March, April, 

 June, August and September. 1907. — Plentiful in March, May and 

 June, and a few in August. 1908. — Numerous in May. 1909. — 

 Numerous in September. 



Phialidium temporarium : — 1906. — Plentiful in March, April and June ; 

 a few in October, November and December. 1907. — In January 

 one was taken ; frequent in March ; many in May, also in June, 

 July and August. 1908. — A few in March, and many in May, June 

 and July. 1909. — A few in February and March ; very numerous in 

 June and September. 

 Polycanna sp. : — 1909.- — In June about 20 specimens were captured, 

 probably the species vitrina. 1923. — A large number of damaged 

 large specimens were stranded on the shore on the 16 and ig of Septem- 

 ber. None of these was perfect, but enough to show that the largest 

 one was at least eleven inches in diameter. The colour was purplish 

 blue, shading into pink in the canals. 



A 2 



